package com.qd.panda.service.commodity;

import cn.hutool.core.collection.CollUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.RedisTemplateUtil;
import com.qd.common.panda.domain.entity.commodity.CommodityDescDTO;
import com.qd.panda.mapper.commodity.CommodityDescMapper;
import com.qd.panda.model.CommodityDesc;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.time.LocalDateTime;
import java.util.*;

import static java.util.stream.Collectors.toList;

/**
 * 商品描述
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class CommodityDescService extends BaseService<CommodityDescMapper, CommodityDesc> {

    private static final String PREFIX_ID = "panda_commodity_desc_commodityId_{0}";

    private final RedisTemplateUtil<CommodityDesc> redisTemplateUtil;

    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CommodityDescDTO save(CommodityDescDTO dto) {
        final CommodityDesc model = dtoToModel(dto);
        model.setIsDeleted(ConstantDto.DICT_DELETE_NO);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CommodityDescDTO update(CommodityDescDTO dto) {
        final CommodityDesc historyModel = Optional.ofNullable(getById(dto.getCommodityId())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        final CommodityDesc model = dtoToModel(dto);
        try {
            if (super.updateById(model)) {
                return modelToDto(model);
            }
            throw new ApiException("更新失败");
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
            model.freeData();
        }
    }

    /**
     * 批量添加
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void saveBatch(List<CommodityDesc> mList) {
        try {
            if (!super.saveBatch(mList)) {
                throw new ApiException("批量添加失败");
            }
        } finally {
            clearCaches(mList);
        }
    }

    /**
     * 批量更新
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void updateBatchIds(List<CommodityDesc> mList) {
        final List<String> ids = mList.stream().map(CommodityDesc::getCommodityId).collect(toList());
        final List<CommodityDesc> historyModelList = checkIds(ids);
        try {
//            if (!super.updateBatchById(mList)) {
//                throw new ApiException("批量更新失败");
//            }
            getBaseMapper().batchUpdate(mList);
        } finally {
            clearCaches(historyModelList);
            historyModelList.clear();
            ids.clear();
        }
    }

    /**
     * 删除，单个
     *
     * @param commodityId 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String commodityId) {
        final CommodityDesc historyModel = Optional.ofNullable(getById(commodityId)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            LocalDateTime now = LocalDateTime.now();
            historyModel.setDeleteTime(now);
            if (!super.removeById(historyModel)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
        }
    }

    /**
     * 批量删除
     *
     * @param ids 主键集合
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeBatchIds(List<String> ids) {
        ids.forEach(this::removeById);
    }

    /**
     * 批量删除
     *
     * @param list 删除集合
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeBatch(List<CommodityDesc> list) {
        try {
            if (!super.removeByIds(list)) {
                throw new ApiException("批量删除失败");
            }
        } finally {
            clearCaches(list);
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(CommodityDescDTO dto) {
        final QueryWrapper<CommodityDesc> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param commodityId 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String commodityId) {
        boolean exists = false;
        if (StringUtils.hasLength(commodityId)) {
            final CommodityDesc model = getById(commodityId);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param commodityId 主键
     * @return 单条记录
     */
    public CommodityDesc getById(String commodityId) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, commodityId);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(commodityId), CommodityDesc.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param commodityId 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CommodityDescDTO getByIdDto(String commodityId) {
        return Optional.ofNullable(getById(commodityId)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    public CommodityDesc getOne(CommodityDescDTO dto) {
        final QueryWrapper<CommodityDesc> queryWrapper = createQueryWrapper(dto);
        CommodityDesc model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CommodityDescDTO getOneDto(CommodityDescDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    public List<CommodityDesc> getList(CommodityDescDTO dto) {
        final QueryWrapper<CommodityDesc> queryWrapper = createQueryWrapper(dto);
        final List<CommodityDesc> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<CommodityDescDTO> getListDto(CommodityDescDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 分页数据
     *
     * @param page 分页对象
     * @param dto  查询参数
     * @return 分页信息
     */
    @Transactional(readOnly = true)
    public IPage<CommodityDescDTO> page(Page<CommodityDesc> page, CommodityDescDTO dto) {
        final QueryWrapper<CommodityDesc> queryWrapper = createQueryWrapper(dto);
        Page<CommodityDesc> iPage = baseMapper.selectPage(page, queryWrapper);
        Optional.ofNullable(iPage.getRecords()).ifPresent(this::modelToDtoList);
        queryWrapper.clear();
        return iPage.convert(this::modelToDto);
    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(CommodityDesc model) {
        if (null == model) {
            return;
        }
        redisTemplateUtil.deleteByKey(RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getCommodityId()));
    }

    /**
     * 批量清空缓存
     *
     * @param list 数据库对象
     */
    public void clearCaches(List<CommodityDesc> list) {
        if (null == list || list.isEmpty()) {
            return;
        }
        List<String> ids = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getCommodityId())).collect(toList());
        if (!ids.isEmpty()) {
            redisTemplateUtil.deleteByKey(ids);
            ids.clear();
        }
    }

    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public CommodityDescDTO modelToDto(CommodityDesc model) {
        if (null == model) {
            return null;
        }
        final CommodityDescDTO dto = new CommodityDescDTO();
        dto.setCommodityId(model.getCommodityId());
        dto.setUseRules(model.getUseRules());
        dto.setCommodityDesc(model.getCommodityDesc());
        dto.setAddTime(model.getAddTime());
        dto.setUpdateTime(model.getUpdateTime());
        dto.setDeleteTime(model.getDeleteTime());
        dto.setIsDeleted(model.getIsDeleted());
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public CommodityDesc dtoToModel(CommodityDescDTO dto) {
        if (null == dto) {
            return null;
        }
        final CommodityDesc model = new CommodityDesc();
        model.setCommodityId(dto.getCommodityId());
        model.setUseRules(dto.getUseRules());
        model.setCommodityDesc(dto.getCommodityDesc());
        model.setAddTime(dto.getAddTime());
        model.setUpdateTime(dto.getUpdateTime());
        model.setDeleteTime(dto.getDeleteTime());
        model.setIsDeleted(dto.getIsDeleted());
        return model;
    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<CommodityDescDTO> modelToDtoList(List<CommodityDesc> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<CommodityDesc> dtoToModelList(List<CommodityDescDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }


    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<CommodityDesc> createQueryWrapper(CommodityDescDTO dto) {
        final QueryWrapper<CommodityDesc> queryWrapper = new QueryWrapper<>();
        if (null != dto) {
            if (StringUtils.hasLength(dto.getCommodityId())) {
                queryWrapper.eq("commodity_id", dto.getCommodityId());
            }
        }
        return queryWrapper;
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     * @return 主键查询出来的集合
     */
    public List<CommodityDesc> checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            throw new ApiException("ids不能为空");
        }
        final List<CommodityDesc> list = baseMapper.getAllList(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        if (ids.size() == list.size()) {
            return list;
        }
        List<String> dbIds = list.stream().map(CommodityDesc::getCommodityId).collect(toList());
        final List<String> notExistsList = ids.stream().filter(id -> !dbIds.contains(id)).collect(toList());
        dbIds.clear();
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
        return list;
    }

    @Transactional(rollbackFor = Exception.class)
    public void removeAll() {
        List<String> all = super.getBaseMapper().getAll();
        if (!all.isEmpty()) {
            super.getBaseMapper().deleteAll(all);
            all.clear();
        }
    }

    @Transactional(rollbackFor = Exception.class)
    public void saveCommodityDescList(List<CommodityDesc> commodityList) {
        saveBatch(commodityList);
    }

    @Transactional(rollbackFor = Exception.class)
    public void saveOrUpdateCommodityDescList(List<CommodityDesc> commodityList) {
        List<String> commodityIds = commodityList.stream().map(CommodityDesc::getCommodityId).collect(toList());
        List<CommodityDesc> oldList = super.getBaseMapper().getAllList(commodityIds);
        List<CommodityDesc> addList = new ArrayList<>(1024);
        List<CommodityDesc> updateList = new ArrayList<>(1024);
        List<CommodityDesc> deleteList = new ArrayList<>(1024);
        List<String> oldIdsList = null;
        if (!oldList.isEmpty()) {
            oldIdsList = oldList.stream().map(CommodityDesc::getCommodityId).collect(toList());
        }
        for (CommodityDesc commodityDesc : commodityList) {
            if (null == oldIdsList || oldIdsList.isEmpty()) {
                if (commodityDesc.getIsDeleted().equals(ConstantDto.DICT_DELETE_NO)) {
                    addList.add(commodityDesc);
                }
            } else {
                if (CollUtil.contains(oldIdsList, commodityDesc.getCommodityId())) {
                    if (commodityDesc.getIsDeleted().equals(ConstantDto.DICT_DELETE_NO)) {
                        updateList.add(commodityDesc);
                    } else {
                        deleteList.add(commodityDesc);
                    }
                } else {
                    if (commodityDesc.getIsDeleted().equals(ConstantDto.DICT_DELETE_NO)) {
                        addList.add(commodityDesc);
                    }
                }
            }
        }
        if (!addList.isEmpty()) {
            saveBatch(addList);
            addList.clear();
        }
        if (!updateList.isEmpty()) {
            updateBatchIds(updateList);
            updateList.clear();
        }
        if (!deleteList.isEmpty()) {
            List<String> deleteListIds = deleteList.stream().map(CommodityDesc::getCommodityId).collect(toList());
            if(!oldList.isEmpty()){
                List<String> idsNoDel = oldList.stream().filter(cl -> cl.getIsDeleted().equals(ConstantDto.DICT_DELETE_NO)).map(CommodityDesc::getCommodityId).collect(toList());
                if(!idsNoDel.isEmpty()){
                    List<String> deleteIds = new ArrayList<>(CollUtil.intersection(deleteListIds, idsNoDel));
                    if (!deleteIds.isEmpty()) {
                        for (CommodityDesc commodityDesc : deleteList) {
                            removeById(commodityDesc.getCommodityId());
                        }
                        deleteIds.clear();
                    }
                }
            }
            deleteListIds.clear();
            deleteList.clear();
        }
        commodityIds.clear();
    }
}